以类水滑石为前躯体的铜镍基催化剂催化糠醛液相加氢  

Furfural Liquid-phase Hydrogenation over CuNi-based Catalysts Derived from Hydrotalcite-like Precursors

作　　者：郑良科[1] 徐成华[1] 刘建英[1] 刘盛余[1] 

机构地区：[1]成都信息工程学院资源环境学院,四川成都610225

出　　处：《精细化工》2010年第11期1078-1082,1085,共6页Fine Chemicals

基　　金：四川省教育厅青年基金项目(2006C032);成都信息工程学院发展基金项目(KYTZ20060902)~~

摘　　要：该文以类水滑石为前驱体经500℃焙烧得到铜镍基催化剂(Cu11.2Ni4.7-MgAlO)及相应的单组分铜基(Cu11.2-MgAlO)或镍基催化剂(Ni4.7-MgAlO),并采用X射线粉末衍射(XRD)、程序升温还原(H2-TPR)等技术对催化剂进行了表征.以糠醛液相加氢为探针反应,考察了3种催化剂的催化性能,并详细研究了催化剂还原活化温度、加氢反应温度、加氢压力、反应时间及催化剂用量等工艺条件对Cu11.2Ni4.7-MgAlO催化糠醛液相加氢反应的影响.结果表明,Cu11.2Ni4.7-MgAlO的催化性能均优于Cu11.2-MgAlO和Ni4.7-MgAlO;在最佳反应条件下,以Cu11.2Ni4.7-MgAlO为催化剂的糠醛转化率和糠醇选择性均可分别达到95.6%和93.1%,Cu11.2Ni4.7-MgAlO循环使用6次后,催化性能无明显下降,具有较好的稳定性.The Cu-,Ni-and CuNi-based catalysts for furfural（FFR） liquid-phase hydrogenation were prepared by the calcination of the corresponding hydrotalcite-like precursors and characterized by XRD and H2-TPR techniques in the present work.At the same time,the effects of reduction activation temperature,hydrogenation temperature,H2 pressure,reaction time and catalyst amount on the FFR catalytic hydrogenation were also further investigated in details.The results showed that the CuNi-based catalysts（Cu11.2Ni4.7-MgAlO） exhibited an excellent catalytic property compared with the corresponding Cu-or Ni-based catalysts.Under the optimum conditions,Cu11.2Ni4.7-MgAlO gave a higher furfural conversion and furfuryl alchol selectivity of 95.6% and 93.1%,respectively.There was no obvious decrease in the catalytic properties to be observed during the catalyst cycle lifetime.

关 键 词：类水滑石前驱体 铜镍基催化剂 糠醛 液相催化加氢 糠醇 

分 类 号：TQ031.4[化学工程] TQ032.41